[2016-02-09] [JavaScript] [Data type coercion]

[2016-02-09] [JavaScript] [Data type coercion]

• Similar to implicit conversions
• Boolean () converts to a Boolean value
• String () converts to strings
• Number () is converted to a numeric type

• parseint (String,radix)//Convert to integral type
• String that needs to be converted.
• String starts with 0, 8 binary
• Start with a different number, 10 binary
• 0x start, 16 binary
• In other forms, the number legal part is read (similar to the C language when scanf reads int)
• Note: You cannot convert bool to 0 | 1
• Allow spaces at the beginning and end
• cannot be converted to a number, return Nan
• Redix binary, default 10-binary
• parseint (0x123);//return 0x123 10 binary digits
• Note: 2E3ASD reads 2000 instead of 2.
• Parsefloat (string);//return conversion to floating-point type
• Similar on parseint

From for notes (Wiz)

[2016-02-09] [JavaScript] [Data type coercion]